Exhaust Specialist Advice Needed
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
Exhaust Specialist Advice Needed
Just picked up a 79 Corvette and has the factory old style convertor with muffler delete and sound pretty good. Thought about removing the cat (or replacing with a modern cat) and installing a set of Magnaflow 323454 mufflers. Having the 2 "Y" pipe set up would do 3 things, avoid exhaust drone, quiet it down a bit and set restriction at a manageable level. What troubles me is seeing a lot of the Magnaflows removed and resold to loud, of fit or what? has any one did what I'm looking to do, did it work, let me know, thanks! AL. 
Former Vendor
Joined: Jan 2015
Posts: 412
Likes: 64
Hey Al. First off, congratulations on picking up the '79. We hope to hear more about it in the future.
Regarding your question-Our Exhaust systems/mufflers have always been on the quieter end of the spectrum, since we design our products to improve on performance and sound quality, rather than volume. Most of the time what causes exhausts to get too aggressive is when headers are replaced and cats deleted.
Our guess as to why you see them being sold is that exhaust preference is something that is always evolving, and varies greatly between car owners, so sometimes a few changes are needed to get it exactly how they want.
If you happen to have any other questions for us, feel free to drop us a call or PM. We'd be happy to help!
Regarding your question-Our Exhaust systems/mufflers have always been on the quieter end of the spectrum, since we design our products to improve on performance and sound quality, rather than volume. Most of the time what causes exhausts to get too aggressive is when headers are replaced and cats deleted.
Our guess as to why you see them being sold is that exhaust preference is something that is always evolving, and varies greatly between car owners, so sometimes a few changes are needed to get it exactly how they want.
If you happen to have any other questions for us, feel free to drop us a call or PM. We'd be happy to help!
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
79 Corvette
No, not in the near future. As you know this was not the best year for horse power. My plans are to go over the car to make it safe and reliable then paint and interior. It's a low mile car so still has life left and runs rather well for what it is. As far as exhaust, magnaflow systems seem to have the Corvette side exhaust tone with out the leg burners.
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
1979 Corvette Exhaust
Hey Al. First off, congratulations on picking up the '79. We hope to hear more about it in the future.
Regarding your question-Our Exhaust systems/mufflers have always been on the quieter end of the spectrum, since we design our products to improve on performance and sound quality, rather than volume. Most of the time what causes exhausts to get too aggressive is when headers are replaced and cats deleted.
Our guess as to why you see them being sold is that exhaust preference is something that is always evolving, and varies greatly between car owners, so sometimes a few changes are needed to get it exactly how they want.
If you happen to have any other questions for us, feel free to drop us a call or PM. We'd be happy to help!
Regarding your question-Our Exhaust systems/mufflers have always been on the quieter end of the spectrum, since we design our products to improve on performance and sound quality, rather than volume. Most of the time what causes exhausts to get too aggressive is when headers are replaced and cats deleted.
Our guess as to why you see them being sold is that exhaust preference is something that is always evolving, and varies greatly between car owners, so sometimes a few changes are needed to get it exactly how they want.
If you happen to have any other questions for us, feel free to drop us a call or PM. We'd be happy to help!
Safety Car
Joined: Sep 2011
Posts: 4,121
Likes: 1,230
From: Madeira Beach, FL
2024 C8 of the Year Finalist - Unmodified
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
I am planning on using Magna Flow mufflers when it comes time to replace them. I've watched them and like the sound. My favorite show is Overhaulin and the systems he installs are Magna Flows and I love the sound.
I don't think I'll ever go with side pipes
I have a 68 BB.
Marshal
I don't think I'll ever go with side pipes
I have a 68 BB.
Marshal
Burning Brakes
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
I would at least swap the convertor for a new one. The original style was very poor in every way - unless you care more about it being original. The new convertors are a vast improvement.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
I put the Corvette Central 2.5" true dual system with the Magnaflow mufflers on my wifes 79. GM 290hp crate with the Comp 262 cam. Stock 2" ram horns manifolds of course no converters.
It sounded good (just a little rumble) and ran well. Everyone that drove the car and heard the car liked it. It was not very loud and had no drone what so ever. Which is good because the wife was not going to stand for me turning her car into a "race car'.
We sold the car to my parents last year who are in their 60's and they both think the car is great.
Will
It sounded good (just a little rumble) and ran well. Everyone that drove the car and heard the car liked it. It was not very loud and had no drone what so ever. Which is good because the wife was not going to stand for me turning her car into a "race car'.
We sold the car to my parents last year who are in their 60's and they both think the car is great.
Will
Last edited by rklessdriver; Jan 15, 2016 at 09:41 AM.
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Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
convertor
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
I put the Corvette Central 2.5" true dual system with the Magnaflow mufflers on my wifes 79. GM 290hp crate with the Comp 262 cam. Stock 2" ram horns manifolds of course no converters.
It sounded good (just a little rumble) and ran well. Everyone that drove the car and heard the car liked it. It was not very loud and had no drone what so ever. Which is good because the wife was not going to stand for me turning her car into a "race car'.
We sold the car to my parents last year who are in their 60's and they both think the car is great.
Will
It sounded good (just a little rumble) and ran well. Everyone that drove the car and heard the car liked it. It was not very loud and had no drone what so ever. Which is good because the wife was not going to stand for me turning her car into a "race car'.
We sold the car to my parents last year who are in their 60's and they both think the car is great.
Will
Melting Slicks
Joined: Sep 2004
Posts: 3,227
Likes: 671
From: Northeast
I have a 78 L82 4spd and bought this Magnaflow system: http://www.parts123.com/corvettecent...50g&ukey=50590
In addition I needed to purchase the exhaust hanger bracket for the 4spd.
In addition I needed to purchase the exhaust hanger bracket for the 4spd.
Last edited by BKarol; Jan 17, 2016 at 09:12 AM.
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
I have a 78 L82 4spd and bought this Magnaflow system: http://www.parts123.com/corvettecent...50g&ukey=50590
In addition I needed to purchase the exhaust hanger bracket for the 4spd.
In addition I needed to purchase the exhaust hanger bracket for the 4spd.
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
Was on the fence on exhaust choices as far as stock two "Y" set up that would use a 323454 muffler and the true dual system system uses a 323737 muffler. the 323454 has a shorter inlet pipe then the 323454 muffler. I'm thinking the SQ would be better with the true dual system opposed to the single dual "Y" set up, any options?
Former Vendor
Joined: Jan 2015
Posts: 412
Likes: 64
The 323454 and other kits in question actually are not an official Magnaflow product, but are made independently by a 3rd party company using our aluminized mufflers for cost efficiency. The Catback system we currently offer is #16710, which uses the Y configuration and leaves your stock cat in place.
The true-dual system mentioned earlier will be louder, and maybe gain a couple more hp, but will delete your cat from the look of it, which may be a deciding factor for some.
Another thing to consider is the material. Aluminized mufflers and exhaust are susceptible to rusting if the coating is scratched, while full stainless exhausts will not, and tend to last longer.
The true-dual system mentioned earlier will be louder, and maybe gain a couple more hp, but will delete your cat from the look of it, which may be a deciding factor for some.
Another thing to consider is the material. Aluminized mufflers and exhaust are susceptible to rusting if the coating is scratched, while full stainless exhausts will not, and tend to last longer.
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,044
Likes: 33
Exhausting Exhaust Qestions
The 323454 and other kits in question actually are not an official Magnaflow product, but are made independently by a 3rd party company using our aluminized mufflers for cost efficiency. The Catback system we currently offer is #16710, which uses the Y configuration and leaves your stock cat in place.
The true-dual system mentioned earlier will be louder, and maybe gain a couple more hp, but will delete your cat from the look of it, which may be a deciding factor for some.
Another thing to consider is the material. Aluminized mufflers and exhaust are susceptible to rusting if the coating is scratched, while full stainless exhausts will not, and tend to last longer.
The true-dual system mentioned earlier will be louder, and maybe gain a couple more hp, but will delete your cat from the look of it, which may be a deciding factor for some.
Another thing to consider is the material. Aluminized mufflers and exhaust are susceptible to rusting if the coating is scratched, while full stainless exhausts will not, and tend to last longer.
Why would Corvette Central put Magna-Flow's name on a system that is not Magna-Flow? I think the system for my 4-speed 79 would use a 323738-MAG part number. Has any one in MD, PA. or VA installed a 323738-MAG on the Corvette? Who makes the 323738-MAG system for Corvette Central, what does it sound and perfome like?